NEW YORK — The story might sound familiar. A white couple, Harry and Doris Hopper, residents in a quiet suburb of Macon, Georgia, urgently called the police one evening to report a crime. Someone had broken into her car and stolen her handgun, a .22 caliber pistol, from the glove compartment. The police, two officers, arrived and asked Doris Hopper if she could identify the thief. It was a young black man, she said.